Davej wrote:
Well, uh, for less money than this thingie costs you could just have a 2nd rope with a pulley on the end.
Yep, you could put a 2nd rope over a limb, position a pulley secured to the end with your DRT rope through the pulley, tighten up the rope holding the pulley, trunk anchor it on the ground. Use a good secure way to attach the rated pulley to the end of the rope, a backed Fig 8 on a bight with a rated screwlink delta through the bight holding the pulley would be a good choice.
Beware, climbing DRT on a pulley is very different, you go up faster (much less friction) but you also can go down faster if you're not paying close attention.
Also remember that you are doubling the load on the supporting limb with this type of TIP. Make it a nice fat branch with the rope over the branch at the trunk union.
But... I'd just use a rope sleeve 99.99% percent of the time DRT. It's simple and very effective, minimizes gear and makes install and removal quick and easy.
Most arborist climbers who use rope guide-like devices footlock a doubled rope to get into the tree and then place the rope guide manually on the limb. It's the difference between the time-based demands of work climbing and the less pressured rec climbing approach. I wouldn't focus too much on these advanced false crotch techniqes, the important thing is to get many hours in the tree climbing using simple and sound basic technique. I've said this many times but it's worth repeating, look for technical solutions to problems you discover while climbing. It's pointless to try and solve problems that you haven't run into yet.
-moss